Abstract With the development of science and technology, lithium ion batteries have become a representative of modern high-performance batteries due to their excellent performance. In this work, BiNbO4 with the nanowire morphology is fabricated by a simple electrospinning method on a stainless steel mesh cage collector. Here, we demonstrate that the BiNbO4 nanowires display a reversible capacity of 165 mAh g−1 and remarkable cycling stability at a current density of 50 mA g−1. When cycled at 700 mA g−1, BiNbO4 nanowires can maintain the capacity retention of 60% after 700 cycles, revealing better cycling properties than other Bi-based anode materials. In addition, in-situ X-ray diffraction analysis suggests that BiNbO4 nanowires have good electrochemical reversibility. BiNbO4 is transformed into Bi nanocrystallites and Li3NbO4 during the first discharge process. With the continuation of the discharge, active Bi nanocrystallites react with lithium ions to form Li3Bi alloys. This is a reversible process that provides reversible capacity as the reaction proceeds.

中文翻译：

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具有分层结构的超长 BiNbO 4 纳米线表现出可逆的锂存储

摘要 随着科学技术的发展，锂离子电池以其优异的性能成为现代高性能电池的代表。在这项工作中，具有纳米线形态的 BiNbO4 通过简单的静电纺丝方法在不锈钢网状笼收集器上制备。在这里，我们证明了 BiNbO4 纳米线在 50 mA g-1 的电流密度下显示出 165 mAh g-1 的可逆容量和显着的循环稳定性。当以 700 mA g-1 循环时，BiNbO4 纳米线在 700 次循环后可保持 60% 的容量保持率，显示出比其他铋基负极材料更好的循环性能。此外，原位 X 射线衍射分析表明 BiNbO4 纳米线具有良好的电化学可逆性。在第一次放电过程中，BiNbO4 转化为 Bi 纳米微晶和 Li3NbO4。随着放电的继续，活性Bi纳米微晶与锂离子反应形成Li3Bi合金。这是一个可逆过程，随着反应的进行提供可逆的容量。